Combined Chlorine Issues

[Watermom]

How has your cya changed so much over the life of this thread --- 41, 30, 0, 11. (I'm not even sure how you could discern a reading of 11.)

Regardless of which number is right, a shock level of 30 is plenty high enough. Are you letting the cl level fall off during the day or sustaining it with frequent testing and frequent dosing with bleach?

I'm sure it seems as if this is never gonna end. We have had several posters this year with this same problem --- excessive chlorine demand and taking a ton of chlorine to finally rid the pool of CC and have FC hold overnight. But, it does finally get there. I hope you have been reading some of those other threads and get some hope for your pool when you read of another person's pool that has made it through. I'm sorry it is taking so long ................

[hobie0]

I'm using a Lamotte ColorQ tester currently. So, it is a digital reading. I'm not sure how accurate the CYA readings are. I'm pretty sure the zero was a false reading. But, I'm positive that I have lost CYA over the past month, because it was reading 40-50 all my testings before my CC trouble occurred.

I did order the Taylor kit recommended here, but I will not receive it for a few more days.

[Watermom]

Ok. Smart move. Post with your numbers when you get your kit. In the meantime, keep at it. Bleach, bleach, and more bleach.

[hobie0]

Received my Taylor K2006 Test Kit yesterday. My Lamotte Color Q was giving me false readings.

Chlorine Numbers with Taylor kit:
FC: 18
CC: 0

Chlorine Numbers with Lamotte Test Kit
FC: 15.5
CC: 3.0

I'm going to let the chlorine get back down to below 10 and then repost all my numbers with both kits for a comparison.

[Watermom]

OK. We'll take a look when you get current numbers. How ya like that kit?

[hobie0]

Here's my numbers with the new Taylor kit

FC: 6.0
CC: 0
PH: 7.0
Alk- 90
Ca- 500
CYA - 30

Numbers from my Lamotte Color Q

FC: 6.5
CC: 1.8
PH: 7.1
ALK: 86
Ca: 260
CYA: 26

I currently aerating the pool to get my pH up to 7.4.
I'm also going to buy some more CYA and add to get my CYA up to 60 because I do have a Salt Water Chlorine Generator.

I know the Lamotte tester is giving me a false CC reading. My guess is the Calcium Hardness reading is also false. Let me know what you think.

Thanks for all your help!!!

[aylad]

I believe that the Ca reading is also false--if you'll search through the forum, there was a discussion a couple of years ago with another poster on the subject, and involved calls to customer support through the Lamotte supplier, and for some reason that Ca number was false, too. Do some searching and I will too, to see if I can come up with the link.

Otherwise your numbers look pretty good, if you can get that pH up a little!

Janet

Edit: here it is... http://www.poolforum.com/pf2/showthr...hlight=Lamotte